Staff+ Software Engineer, Developer Productivity London, UK

About Anthropic

Anthropic’s mission is to create reliable, interpretable, and steerable AI systems. We want AI to be safe and beneficial for our users and for society as a whole. Our team is a quickly growing group of committed researchers, engineers, policy experts, and business leaders working together to build beneficial AI systems.

About the Role

Anthropic's Infrastructure organization is foundational to our mission of developing AI systems that are reliable, interpretable, and steerable. The systems we build determine how quickly we can train new models, how reliably we can run safety experiments, and how effectively we can scale Claude to millions of users — demonstrating that safe, reliable infrastructure and frontier capabilities can go hand in hand.

Developer Productivity owns the end-to-end experience of how engineers and researchers at Anthropic develop, build, test, and ship code at scale — from the source control and language ecosystems that underpin our monorepo, to the build and CI infrastructure that keeps thousands of daily builds running reliably across multiple cloud providers, to the developer acceleration tooling that deeply integrates Claude into engineering workflows.

Responsibilities:

• Own the technical strategy and roadmap for your area, translating team-level goals into concrete execution plans.
• Define infrastructure architecture, ensuring the hardest problems get solved — whether by you directly or by working through others.
• Design and build scalable, reliable distributed infrastructure and shared libraries that support high-volume workloads across all engineering teams.
• Own and evolve build environments, package management, and dependency systems to enable fast, reproducible builds.
• Define and implement language ecosystem standards, tooling, and frameworks that drive developer productivity across research and production workloads.

You may be a good fit if you:

• Have deep experience with build systems, CI/CD pipelines, and/or developer tooling in a large monorepo environment.
• Have strong proficiency in Python, Rust and/or Go.
• Are obsessed with developer productivity and reducing friction in the software development lifecycle.
• Have experience with container orchestration and infrastructure at scale.
• Have excellent communication skills and enjoy supporting internal partners to improve their development experience.
• Are excited about designing foundational systems and are comfortable working independently on ambiguous, high-impact technical challenges.

Strong candidates may have:

• 15+ years (not including internships or co-ops) of experience in a Software Engineer role, building and operating large-scale developer infrastructure.
• 3+ years (not including internships or co-ops) of experience leading large scale complex projects or teams as a tech lead.
• Experience with CI orchestration tools (Buildkite, Jenkins, GitHub Actions, or similar) and merge queue management at scale.
• Experience building or operating remote build execution systems (Bazel Remote Execution API, BuildBarn, BuildBuddy, or similar).
• Experience with Nix/NixOS/Docker and managing large image/package sets at scale.
• Experience building CLI tools, developer-facing services, and GitHub API and automation workflows.

Logistics

• Minimum education: Bachelor’s degree or an equivalent combination of education, training, and/or experience.
• Required field of study: A field relevant to the role as demonstrated through coursework, training, or professional experience.
• Minimum years of experience: Years of experience required will correlate with the internal job level requirements for the position.
• Location-based hybrid policy: Currently, we expect all staff to be in one of our offices at least 25% of the time. However, some roles may require more time in our offices.
• Visa sponsorship: We do sponsor visas! However, we aren't able to successfully sponsor visas for every role and every candidate. But if we make you an offer, we will make every reasonable effort to get you a visa, and we retain an immigration lawyer to help with this.

The annual compensation range for this role is listed below. For sales roles, the range provided is the role’s On Target Earnings ("OTE") range, meaning that the range includes both the sales commissions/sales bonuses target and annual base salary for the role.